EP 0010885 A1 19800514 - Computerized tomographic apparatus.
Title (en)
Computerized tomographic apparatus.
Title (de)
Gerät für Computer-Tomographie.
Title (fr)
Appareil de tomographie à calculateur.
Publication
Application
Priority
GB 7841710 A 19781024
Abstract (en)
In a computerized tomographic apparatus of the kind in which the performances of different detectors is normalised by causing them to receive radiation along substantially similar paths in various overlap zones within a body under examination, the normalisation can be adversely affected by the amount of radiation exposure suffered by each detector prior to its receipt of radiation along the paths in the overlap zones. The invention permits such adverse effects to be reduced or eliminated by averaging the electrical signals, produced by the detectors in respect of the paths in the overlap zones; the signals relating to paths near the centre of an overlap zone being combined with the signals relating to other paths distributed substantially across the overlap zone but the signals relating to paths near the edges of an overlap zone being combined with the signals relating to only a few, neighbouring, paths.
IPC 1-7
IPC 8 full level
G01N 23/04 (2006.01); A61B 6/03 (2006.01); G06T 11/00 (2006.01)
CPC (source: EP US)
A61B 6/032 (2013.01 - EP US); G06T 11/005 (2013.01 - EP US); A61B 6/4028 (2013.01 - EP US); Y10S 378/901 (2013.01 - EP US)
Citation (search report)
- DE 2648132 A1 19780427 - PHILIPS PATENTVERWALTUNG
- GB 1471531 A 19770427 - EMI LTD
- GB 1497396 A 19780112 - EMI LTD
- GB 1283915 B
- GB 2002988 A 19790228 - EMI LTD
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
EP 0010885 A1 19800514; EP 0010885 B1 19830223; CA 1127776 A 19820713; DE 2964915 D1 19830331; JP H0257 B2 19900105; JP S5560444 A 19800507; US 4295195 A 19811013
DOCDB simple family (application)
EP 79302180 A 19791011; CA 337763 A 19791017; DE 2964915 T 19791011; JP 13753379 A 19791024; US 8766979 A 19791024